================
@@ -1752,7 +1752,10 @@ void ASTWriter::WriteControlBlock(Preprocessor &PP,
StringRef isysroot) {
Record.push_back(PPOpts.UsePredefines);
// Detailed record is important since it is used for the module cache hash.
Record.push_back(PPOpts.DetailedRecord);
- AddString(PPOpts.ImplicitPCHInclude, Record);
+ if (PPOpts.ImplicitPCHInclude.empty())
+ AddString(PPOpts.ImplicitPCHInclude, Record);
----------------
vsapsai wrote:
I would note that semantic for `makeAbsolutePath("")` isn't obvious while
`AddPath("")` seems to be understandable, especially that we have already
`AddString("")`.
https://github.com/llvm/llvm-project/pull/178781
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